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Re. 16,397 y E. J. MUCH FISHING TOOL Julyl 27 1926./A

Original Filed Feb. 13,

Reiaeued July 27, 1926.

UNITED sTATEs Re. 16,397 PATENT OFFICE.

EDWARD J'. 0l' CITY, ASSIGNO, BY mi ABSIGmNTB,

'ro m au consonancia, or nanas, Tazas, a conroaa'rxon or nm.

im@ TOOL.

r1`lnal le'. 1,808,801, dated February 17, im, Serial lo. 618,888, med February 1S, 1983. 'Application for rei-le lled lebruary 8, 1988. Serial lo. 88,921.

same. A still further object of the invention is to provide a well fishing tool embodying a plurality of sets of gripping elements which will grip or engage the object to `be fished out of the well at diierent oints thereby insuring a positive hold on t e latter until the object has been brought to the surface of the well. v

It is also an object of the invention to rovide a device of this character whic is simple in construction and can be readily taken apart for the purpose of repairs or inserting any new parts in bling.

With the preceding and other objects and advantages 1n mind', the invention consists in the novel combination of elements, constructions and arrangement of parts and operation t0 be hereinafter specifically referred to, claimed and illustrated in the accompanyindrawing whereinigure 1 is a longitudinal sectional view of a well fishing tool constructed in accordance with my invention.

Figure 2 is a horizontal sectional view taken on line 2 2 of the same.

Referring in detail to the drawing wherein correspondin characters of reference denoteT correspon ing parts throughout the several views, the numeralY 5 designates a tubular or cylindrical easing embodying tube sections or nipples 6. Threadedly engaged withthe upper end of the tubular casing 5 'is a head or stock 7 adapted to be connected in the usual manner with the well drilling or lowering apparatus, not shown, the head be ing provided with divergent openings 8 for the purpose of permitting gas, water or the like to escape from the well while the device is lowered therein. Y

The inner face of each of the ipe sections 6 is provided with an inclin or beveled surface 9, the inclination of ,which is increased towards the lower end thereof` For cooperation with each of the beveled surfaces 9 a set of'gripping elements or slips 10 are employed. As both of these sets of sli s are substantially identical, a detailed esclription of one will apply to both. These slips comprise segments 11 which have their outer faces longitudinally tapered to extendv parallel to the inclined surfaces 9 while their inner faces are serrated as at 12 to engage the object to be lifted.

Inforder to lock each set of slips or gripping elements together to prevent them from movement with respect .to each other they are provided with circumferential grooves in their inner faces adjacent their upper ends and accommodated therein are annular flanges 13 formed on rings 14. It will be thus seen that the slips will move laterally with respect to each other but cannot move longitudinally with res t to each other. However the slips may connected in any other suitable manner. `A sleeve 15 is arranged within the casing tube 5 and is interposed between each set of slips or grippin elements so that upon gement of t ie lower set of slips wit the oject, the latter will be raised and through the instrumentality of this tubular member the upper set of slips or gripping elements will be raised. l

A coil spring 16 is arranged in the tubular member or casing 5 and 1s interposed,l between the up rmost set of sli s, the head or stock 7 an normally urges th sets of slips downwardly. A depending il 17 is carried by the head or stock 7 an encircles the upper end of the spring 16. The lower section or nipp e 6 hasaninwardly beveled guide face-18 at its beom forming a guide shoe.

In the operation of the device, the casing 5 is lowered into the well until the sli s 10 enga e the object and which causes the atter to ri e upwardly over the inclined Surface 9 until the slips have moved laterally sulii ciently4 to receive the object therebetween. The coil spring 16 ur ing both sets of sli s downwardly causes t e atter to positive y grip the object and hold the same within the casing until the latter vhas been drawn to the surface of the well.

From the foregoing it will be seen that I have provided a simple, inex nsive and eicient means for carryi out t e objects of the invention, and while have particularly described the means best adapted to vperform the functions set forth, various changes in form, proportion and in the minor details of construction may be resorted to without departing from the s irit or sacrificing any of the principles of t e invention.

What I claim as new and desire to secure by Letters Patent is:

1. A tool of the class described comprising a tubular casing composed of two tubesections threaded into engagement with one another, the inner walls of s aid tube sections adjacent their lower ends being increased in thickness greater toward the extreme lower ends to provide inclined walls, a series of segments forming a pair of gripping members, the outer faces of said segments being inclined coincident to the inclination of the walls at thelo'wer ends of said .tubular sections to coo rate with the latter, the inner faces of sai segments being serrated and the upper peripheral faces of said gripping members being offset to provide circumferential grooves, ring members inserted in said grooves to retain the elements of said gripping members in osition with respect to one another, an a ditional tubular section spacing said gripping members from one another and contacting therewith, a head member threaded into enga ement with the upper end of the upper tu' ular section' of the casin and a coil spring disposed between sai head member and the upper end ofthe upper gripping element, as and foi` the purposes describe 2. In a fishing tool, a head, a plurality of connected tubular sections secured in stages below said head, a tapered seat formed. on the inner surface of each section, toothed laws fittin within each said seat, said jaws ing of ecreasin thickness -in` each set from the upper set ownwardly and resilient means holding said jaws downwardly in their seats.` 3. A multiple stage fishing tool comprising ahead, a plurality of nipples detachably connected together at their adjacent ends, the upper onebein attached to said head, downwardly tapere seats formed in each of said nipples, jaws litt-ing within said seats, said jaws lhavin faces, means to ho d said jaws in horizontal alignment, and a shoe at the lower end of the bottom nipple.

4. A multiple stage lishing too l comprising a head, a plura ity of nipples arranged in sta es below said head, a downwardly tapere inner seat on each nipple, a plurality of `jaws on each seat, means t0 hold said jaws in horizontal alignment, each of said sets of jaws being of uniform internal diameteig'the thickness of adjacent sets of jaws decreasing from the upper niple to the lower nipple, and means to gui e the work into the said nipples.

5. In a fishin tool, a head, a tubular casing depending rom the head and having inclined slip actuating Vfaces at different elevations, and a separate set of slips engaging each face, all of said slips being resiliently sustained, the lower set of slips having a larger work-receiving diameter than the upper set of slips.

6. In a fishin tool, a head, a tubular casing depending m the head and havin inclined slip actuating faces at different e evau tions, and a separate set of slips en aging each face, all of said slips being resi iently sustained, the lower set of slips having a larger work-receiving diameter than the up- 4per set of slips,` the casing being separable between its inchned. faces.

EDWARD J. MUCH.

vertical inner toothed f 

